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Filter boolean subtraction operands by intial bounding box test

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Thomas Krijnen
2018-09-19 16:42:34 +02:00
parent bef9bd25f7
commit 622853d73d
1 changed files with 19 additions and 1 deletions
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src/ifcgeom/IfcGeomFunctions.cpp
+19 -1
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@@ -3362,17 +3362,35 @@ namespace {
return true;
}
void bounding_box_overlap(double p, const TopoDS_Shape& a, const TopTools_ListOfShape& b, TopTools_ListOfShape& c) {
Bnd_Box A;
BRepBndLib::Add(a, A);
TopTools_ListIteratorOfListOfShape it(b);
for (; it.More(); it.Next()) {
Bnd_Box B;
BRepBndLib::Add(it.Value(), B);
if (A.Distance(B) < p) {
c.Append(it.Value());
}
}
}
}
bool IfcGeom::Kernel::boolean_operation(const TopoDS_Shape& a, const TopTools_ListOfShape& b, BOPAlgo_Operation op, TopoDS_Shape& result, double fuzziness) {
bool IfcGeom::Kernel::boolean_operation(const TopoDS_Shape& a, const TopTools_ListOfShape& b_, BOPAlgo_Operation op, TopoDS_Shape& result, double fuzziness) {
bool success = false;
BRepAlgoAPI_BooleanOperation* builder;
TopTools_ListOfShape b;
if (op == BOPAlgo_CUT) {
builder = new BRepAlgoAPI_Cut();
bounding_box_overlap(getValue(GV_PRECISION), a, b_, b);
} else if (op == BOPAlgo_COMMON) {
builder = new BRepAlgoAPI_Common();
bounding_box_overlap(getValue(GV_PRECISION), a, b_, b);
} else if (op == BOPAlgo_FUSE) {
builder = new BRepAlgoAPI_Fuse();
b = b_;
} else {
return false;
}